"Ouch! I hope your friend recovers soon!
These aircraft are definitely not toys. Learned this first hand when I accidentally overloaded an ESC and caused a small fire in my basement last weekend. I now work with an extinguisher next to me AND also…"

"Couple of things I noticed with multicopters:
a. never connect to MP on USB with ESCs on (props may spin up to 30% for 3-4secs)
b. never plug in USB with ESCs on (ditto)
c. never open/close a Arduino terminal with ESCs on (props make spin 1…"

"I got nailed launching a simple flying wing. Brushless = ER visit potential. Changed how I launch the wing after that, but it's also a good reminder to have friends around if at all possible. It is possible to do something…"